Alright, so I'm posting this on here so I can hopefully understand the problem better and maybe get a second opinion on what I should do.
I took my 2007 Vibe in for a wheel alignment. They did the front wheels just fine. When they moved to the back, they noticed the rear toe was just off by a very small degree. They said they could adjust it, but they recommended just to leave it alone unless I was having major tire wear issues or steering problems. Because they would have to remove the wheel bearings to insert shims, and removing the wheel bearings could be a huge PITA and cost a lot of money.
He mentioned something about wheel bearings seizing up inside of the axle tube because of rust and corrosion (I might have misunderstood this and gotten it wrong, so please correct me if I'm wrong here), and trying to remove it could involve a lot time and most likely replacing those parts (thus, a lot of money). He said it wasn't worth it just to adjust that small degree of toe, but if I was ever experiencing rapid tire wear then it would be worth doing.
At the same time though, if there is rust and corrosion like he said possibly could exist, I feel like I should address that issue now instead of waiting? Any thoughts or advice?